For as long as I can remember, I flick straight to the acknowledgements section. Acknowledgements can be intriguing and mysterious, straightforward and straight-up, or sentimental and sad. I like how they can make the author seem completely different to the idea you had of them through their work.
I've set up a blog to capture my favourite acknowledgements and dedications, and you can submit your own. Take a look: i-would-like-to-thank.tumblr.com